KVM: nVMX: Refactor PMU refresh to avoid referencing kvm_x86_ops.pmu_ops

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Refactor the nested VMX PMU refresh helper to pass it a flag stating
whether or not the vCPU has PERF_GLOBAL_CTRL instead of having the nVMX
helper query the information by bouncing through kvm_x86_ops.pmu_ops.
This will allow a future patch to use static_call() for the PMU ops
without having to export any static call definitions from common x86, and
it is also a step toward unexported kvm_x86_ops.

Alternatively, nVMX could call kvm_pmu_is_valid_msr() to indirectly use
kvm_x86_ops.pmu_ops, but that would incur an extra layer of indirection
and would require exporting kvm_pmu_is_valid_msr().

Opportunistically rename the helper to keep line lengths somewhat
reasonable, and to better capture its high-level role.

No functional change intended.

Cc: Like Xu <like.xu.linux@gmail.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220128005208.4008533-9-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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This commit is contained in:

Sean Christopherson 2022-01-28 00:51:54 +00:00 • committed by Paolo Bonzini

parent 0264a35109

commit 0bcd556e15

3 changed files with 7 additions and 4 deletions

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5

arch/x86/kvm/vmx/nested.c

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arch/x86/kvm/vmx/nested.h

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arch/x86/kvm/vmx/pmu_intel.c

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